Submarine boat.



R. DEQUEVLLEY-MONTJSTIN. SUBMEINE BOAT. APPLIUATION FILED MAY 12, 1908.

Patented Bec. 14,1909.

` sponding to Fig. 2, but showing a slightlyv UNITED STATES PATENT OFFICE. .I

RAYMOND DEQUEVILLEY-MONTJUSTIN, OF KIEL, GERMANY.

SUBMARINE BOAT.

` Application led May To all whom it may concern.'

Be it known that I, RAYMOND DEQUE- VILLEYJVIONTJUSTIN, a subject of the King of Spain, and a resident of Kiel, in the Empire of Germany, have invented certain new and useful Improvements in Submarine Boats, of which the following is a specification.

The present invention relates to submarin boats.

In order to make-it possible foiI submarine boats to dive from their position of rest in a vertical direction, so-called vertical propellers are employed, that is, propellers mounted on vertical shafts. These vertical propellers are either arranged in the middle lof the boat or at both ends of the boat at equal distances from the middle of the boat. In the latter instance the vertical propellers are generally arranged inconduits or shafts which project vertically through the boat. When such vertical propellers are employed vertically directed end-thrusts take place which, when the engine driving the propel lers is started, suddenly increase from zero to their maximum and therefore act with a shock on the boat. Practical experiments with such vertical propellers have therefore demonstrated that they act too violently on the boat. Furthermore, it has'been demonstrated that with vertical Y propellers arranged at the ends of the boat it is extremely diflicult to drive the two propellers with the same number of revolutions. W'hen such vertical propellers are used there is therefore danger of causing disastrous disturbances to take place relating to the equilibrium of the boat.

The object of the invention is to remedy these drawbacks.

Two embodiments of the invention are shown in the accompanying drawings, by way of example.

. Figure l shows one embodiment of a subn marine boat in vertical longitudinal section; Fig. 2 isn vertical sectionthrough the middle of the boat; Fig. 3 is a view corredierent embodiment of the invention, and Fig. 4 is a longitudinal horizontal section of the embodiment shown in Fig. 1.

On the top and in the middle 'of the boat is arranged a conning tower if: which communicates with the compartment @for the Specification of Letters Patent.

Patented Dec. 14, 1909.

12, 1908. Serial No. 432,547.

crew. Entrance-hatches e are provided at both sides of the tower la.

According to Figs. l, 2 and 4 of the drawings the diving device ofthe boat consistsv of two'separate suction-pipes s which are mounted in the com artment a below the center of buoyancy o the entire boat. Each pipe s extends rst vertically, from the bottom of the boat and then horizontally or approximately horizontally to the sides of the boat. A turbine-propeller or screw-propeller 0, p is` arranged in the horizontal part t of each pipe. The propellers o, p are mounted directly on the shaft n of the motor m arranged intermediate of the propellers. The blades of one propeller are directed oppositely to those of the other propeller in such a manner that when the propellers turn in one direction the outside water is drawn in through the lower mouth of the pipes s and expelled through the mouth of the part t of the pipes and, when the propellers turn in the opposite direction the-outsidevater is drawn 1n through the mouth ofthe part t of the pipes and is eX- pel-led downwardly through the vertical pipes s. wall of the part t of the .pipes in a watertight manner. It is unnecessary to provide special bearings as the axial thrusts of the two lpropellers o, p counterbalance one another. l

According to Fig. 3 the diving device of the boat consists' of a single vertical suctionpipe which below the motor m is divided .into two horizontal pipeportions t which open toward the sides of the boat. The arrangement of the propellers o, p is similar to that of the embodiment shown in Fig. 2. The front part of the boat is also provided with a suction-pipe whose lower, vertical part merges into a horizontal part 7' which has two branches fw opening into the sides of the boat. In the horizontal part r of the suction-pipe is arranged a rope1lerfv whose shaft can be driven direct y 1n both directions by a motor u arranged in the compament a for the crew.A

rlhe mode of operation of the diving device is a's follows: During the surface-trawl the boat floats?" on the draft-line L-L, the ballast-compartmentsebeing partially or completely'emptied. When the hallada-oom- The shaftn projects through the partments are filled thesboat floats on the 1o horizont l 40' tion of equilibrium of'the boat.A

45 place smoothly und lWithoutv shocks because draft-line M-M and is ready to dive. 'The v boat then still has a small excess of buoyancy which corresponds to the volumes of the cunning tower and hatches c. When it is desired to cause the boat to dive tho propellers 0, ju are rotated by means of the motor m so as to cause the outside Water to be drawn in through the loweropenings of' the vertical ipes s and expelled through the ail pipe-portions t. This causes the pressure vto become decreased at the lower openingsv of the suction-pipes s and the idecrease 1n pressure causes thejboat to dive. The boat continues to sinlr for as long a time l5 as the suction-eifect of the propellers o, D is greater thanthe eii'eot ol the excess of buoyancy. It the boat is to bc maintained at a certain depth it suliices to keep the propellers-rotating ata speed which causes the 2o suction-etiect to become equal 'to the eifect of the excess of buoyancy. It the propcllerso, p are rotated in 'the direction opposite to that in which they were rotated during the diving, an excess' of pressure, instead oi" a decreased pressure, is created at the lower openings of the suction-pipes s which causes the boat to rise rapidly The suction-device in the front part of the boat is used 'for changing the longitudinal inclination of the boat. By rotating `the propeller o at a greater or less speed and in one direction or the other any desired inclination may be imparted to the longitudinal axis of the boat by means ol this suctiondevice. The bearing-pressure or thrust in the direction of the shaft of the propeller, which is caused to taire place by the rotation of the vpropeller o, is absorbed by the body of the boat and does not influence 'the posi- As compared with the'vertical propeller-s already mentioned thev diving .device ac cording to the present invention. presents the advantage of causing the diving to take the thrusts .or bearingpressures created by the starting of tliepropellers o, p act transversely toy the direction of diving ofthe boat,vthat is they are Without iniiuence onJ the diving, and because, when the propellers are started, the circulation effecting the diving takes place gradually. Furthermore, -the special sha e of the suction-pipes s, t permits of the iving device being arranged 1n the middle of the boatibelow the conning tower, as there is sufficient free s ace left above the suction-pi es by reason ot the curved formation of t e pipes. Vertical Propellers operating in vertical shafts do not permit of such arrangement of the diving device. Thesuction-device 'i' w a might also be arranged in the. rear part of the boat and might be ofthe same. construction as. the divin ydevice s, t, 0, p. The shafts oi the 85 propo 1ers o, p and o might also be inclined season a little toward the horizontal plane. Furthermore, the diving device might have only Y Any suitable member which is capable of creating a circulation in the suction-pipes may be employed in lieu of the, propellers o p o. Y v

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is l y 1. A submarine boat having a conduit in communication with the outer Water and through which water is made to circulate to develop the diving action, the lower portion of said conduit leading in a substantially vertical direction from the bottom of the boat, and means causing a ilow of Water through said conduit, acting upon the Water within said conduit in a direction substantially transverse to the diving direction 1 whereby the reaction of said means is not exerted in a direction to influence the diving action.

A submarine boat-having a conduit communicating' with the outer Water, the lower portion of said conduit ezrtending vcrtically from the bottom of the boat, andthe i upper portion of said conduit terminatingA in opposed horizontally presented openings at the sides of the .'boat, and means for causing a circulation through the conduit, actme upon the water therein in a direction f' su stantially transverse to the vdiving direction whereby the reaction of said means is exerted in a direction that does not infiuence the diving action.

3. A. submarine boat having a conduit communicating with` the outer Water. and through which the Water is caused tocirculate in developing the diving action of the boat, said conduit extending for a portion of itsl length vertically from the bottom of the boat and for a portion of the vva-y in a substantially horizontal direction, terminat- "ing in two opposed openings presented in a substantially horizontal direction at the sides' ofv the boat, and'two opposed means acting upon the Water in the conduit, in a direction substantially transverse to the diving direction, whereby the reactions of said means not only take place in a direction that does not aiect the diving operation but are balanced. if l Ll. in a submarine boat, a conduit communicating with the outer Water 'and through Whichethe water is made to circulate in developing the diving action of the boat.; said conduit extending in part in a substantially vertical direction from the bottom oi"l the boat andin part in a substantially horizontal direction and terminatingi'n two opposed opcnings presented in a substantially horizontal direction at the sides of the boat;

and means in the horizontal portion of the conduit, acting upon the Water therein in a directionsubstantially transverse to the direction of diving and thereby presenting its reaction'against the boat in a direction that does not affect the diving.

5. In a submarine boat, a conduit through which water is caused to flow in developing the diving or counter-diving action of the boat; said conduit communicating with the outer Water through a plurality of openings in the bottom of the boat and extending in part vertically from the bottom openings and in part in a substantially horizontal direction and terminating in opposed laterally presented openings through which it eonnnunicates withthe outer Water at the y sides of the boat und a plurality of iueans reactingr against one another. acting upon the water in the horizontal porti-ons ot' the ronduit. and in a direetion substantially transverse to the diving direction.

t3. ln a suhniariue hoat a conduit through \vhieh ivater is eaused to circulate in alteeting the diving direction ot' the boat; said ronduit extending in part vertieally from the bottoni of the boat and having tufo oppositely extending substantially horizontal portions` terminating in openings at. the sides ol' the hout. means .lot-ated in the horizontal portions ot' the' ronduit, acting upon the water therein in opposed horizontal diret-tions. whereby their reactions are balaneed und having a eonunon driving means u'herehv their aetions upon the) water are equal.

7. A submarine boat having a plurality of conduitspthrough which Water is caused to circulate in developing the diving action; each of said conduits extending in part vertically from the bottoni of the boat and in part in a substantially horizontal direction terminating in two opposed laterall)v presented openings; the horizontal portion of one of said conduits extending transversely of the boat andthe horiztntal portion of the other conduit extending in part longitudinally of the boat; each of said conduits heilig provided With means acting on the water in. the horizontal portions, 111 a suhstantially horizontal direction, to develop the How of Water through the conduits.

S. In a submarine boat, ateonduit eouununieating With the Water at the bottoni of the boat and extending in part vertically t'roni the bottoni of 'the boat, in part horizontally and longitudinally of the boat and in part horizontally and transversely of the hoat and terminating in opposed laterally presented openings coinniunicating with the outer'water at the sides of the boat: and nieans ina horizontal portion of said conduit acting upon the water therein in a direction substantially horizontal.

The foregoing specification signed at. Kiel, Germany, this 26th (t\vent'*-sixth) day'of March, 1908. y

RAYMOND DEQUEYlliliEY-MUNTJUSTlN.

In presence off- CARL Ton'r, f HEINRICH MLLER. 

